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Alekssandra [29.7K]
3 years ago
7

According to the concept of length contraction, what happens to the length of an object as it approaches the speed of light and

then slows down, eventually coming to a stop? It is always observed as contracting. It is always observed as the same length. It is observed as expanding and then contracting back to its original length. It is observed as contracting and then expanding back to its original length.
Physics
1 answer:
lord [1]3 years ago
8 0
When an object moves its length contracts in the direction of motion. The faster it moves the shorter it gets in the direction of motion.
The object in this question moves and then stops moving. So it's length first contracts and then expands to its original length when the motion stops.
The speed doesn't have to be anywhere near the speed of light. When the object moves its length contracts no matter how fast or slow it's moving.
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Answer:

<h3>The answer is 40 N</h3>

Explanation:

The force acting on an object can be found by using the formula

<h3>force = mass × acceleration</h3>

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So we have

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We have the final answer as

<h3>40 N</h3>

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6 0
3 years ago
In a pig caller can produce a sound intensity level of 107 dB. How many pig callers would be needed to generate an intensity lev
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Answer:

20 pig callers

Explanation:

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Taking the logarithm function;

10 \ log \bigg(\dfrac{I}{I_o} \bigg) = 13 \ dB

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6 0
3 years ago
K donates, or transfers, one electron to bromine, which has 7 electrons. Both K and Br are now stable with 8 electrons. K become
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<h3 /><h3>Is charge appears when an atom lose or accept electron?</h3>

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Learn more about ionic bond here: brainly.com/question/2687188

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4 0
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6 0
3 years ago
Read 2 more answers
11. एक समान चुम्बकीय क्षेत्र में लम्बवत प्रवेश करने वाले किसी आवेशित कण द्वारा प्राप्त वृत्तीय पथ की
mojhsa [17]

Answer:

<h2> r=mv/Be</h2>

Explanation:

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to derive the radius of the path of the charge we apply

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e=charge

B=magnetic field

v=average speed

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rearranging we have

r=mv^2/Bev

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5 0
3 years ago
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